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Taiwan Gramineae | Family List | Poaceae | Paspalum

Paspalum dilatatum Poir., Encycl. Meth. Bot. 5: 35. 1804; Hsu, Fl. Taiwan 5: 583, pl. 1440. 1978.


Paspalum dilatatum
leaf cs section

Credit: cs kuoh

Perennials; culm tufted, glabrous, stout, mostly 50-150 cm tall; rhizome short. Blade glabrous; ligule 2-4 mm long, truncate, membranaceous, glabrous. Racemes usually 5-10, 6-8 cm long, axils of racemes pilose. Spikelets ovate-pointed, 3-3.5 mm long, green or purplish, in pairs, one subsessile and other shortly pedicelate; lower glume absent; upper glume and lower lemma membranaceous, 5-9- veined, margins fringed with long silky hairs, sparsely covered with silky hairs all over; upper lemma orbicular, ca. 2 mm long, rounded, coriaceous; anther ca. 1 mm long.

TAIPEI: Shimen, Kao 3581. TAICHUNG: Kukuan, Hsu 668. PINGTUNG: Kenting, Hsu 521.

Orinally from South America, naturalized elsewhere. Taiwan, common on waste grounds in northern Taiwan.

midrib 中肋: (la)large:several vascular bundles

leaf surface 表面: (fla)flat surface

sclerenchyma 厚壁組織: (mistr)strand variable with size of vein

chlorenchyma 葉綠組織: (radia)cells radiate and lesser than
bundle sheath cell in width

bundle sheath 維管束鞘: (sk)single bundle sheath with
conspicuous chloroplast

buliform cells not well developed 泡狀細胞不發達: (irreg)epidermal cells irregular in size

chlorenchyma cell number between two adjacent veins: 2

chloroplast form in bundle sheath 束鞘細胞內之葉綠體型式: (out)large amount and in centrifugal site

mestome sheath 內束鞘細胞: (Xyms -)metaxylem pole adjacent with
outer bundle sheath

distance between two adjancent vein 脈間距: 95 micrometer

length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 2

chlorenchyma cell shape in LS 葉綠細胞縱面形狀: lobed


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